Sigma 17mm F4 DG DN | C review

Small in size and weight, but mighty in viewing angle: a winning combination for travel and landscape photography

Sigma 17mm F4 DG DN | C
(Image: © Matthew Richards)

Digital Camera World Verdict

Think ultra-wide-angle lenses and you’re probably thinking of hefty beasts that weigh you down. This Sigma is something altogether different. Thanks to a modest f/4 aperture rating and clever design-work, this 17mm full-frame compatible lens is outrageously small and lightweight for its type, but impeccably engineered and a high-flyer in terms of image quality. And it comes with a very attractive price tag.


  • +

    Robust all-metal build

  • +

    Aperture control ring

  • +

    Super-sharp out to the corners


  • -

    Aperture ring can’t be locked to Auto

  • -

    No de-click option for aperture ring

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    Noticeable vignetting when uncorrected

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The Sigma 17mm F4 DG DN | C is a recent addition to the company’s ‘contemporary’ line-up that includes several prime lenses available in both Sony E-mount and Leica L-mount options, for full-frame mirrorless cameras. They’re designed with a focus on high-end performance, while keeping the size and weight down to easily manageable proportions. They also have an entirely consistent look and feel, throughout the range, making for intuitive handling when swapping between lenses.

(Image credit: Matthew Richards)

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Matthew Richards

Matthew Richards is a photographer and journalist who has spent years using and reviewing all manner of photo gear. He is Digital Camera World's principal lens reviewer – and has tested more primes and zooms than most people have had hot dinners! 

His expertise with equipment doesn’t end there, though. He is also an encyclopedia  when it comes to all manner of cameras, camera holsters and bags, flashguns, tripods and heads, printers, papers and inks, and just about anything imaging-related. 

In an earlier life he was a broadcast engineer at the BBC, as well as a former editor of PC Guide.